A new way called DWS to run php script on nginx 0.8.x !

[Igor Sysoev]

On Sat, Oct 09, 2010 at 04:47:36PM +0800, hightman wrote:

> PHP-DWS is the abbreviation for "PHP Direct Web Server".  It works much like fastcgi server with nginx, 
> 
> But nginx pass the request header of HTTP and socket file description of this connection to it via 
> calling sendmsg(), and then PHP-dws read request body data from http connection , send response 
> data to the http connection directly.
> 
> I simply draw their work in the following flow diagram：
> 
>       [PHP-CGI]
>       ============
>               
>             i)request header+body     ii)request header+body
>            +~~~~>~~~~>~~~~>~~~+     +~~~~~>~~~~~>~~~~>~~~~~+
>            |                  |     |                      |
>           /|\                \|/   / \                    \|/
>       WebVisitor             Web Server               FastCGIServer
>         (user)                (nginx)                  (php-cgi)
>           /|\                \ /   /|\                    \ /
>            |                  |     |                      |
>            +~~~<~~~~<~~~~<~~~~+     +~~~~~<~~~~~<~~~~<~~~~~+
>           iv)response header+body    iii)response header+body
> 
>       [PHP-DWS]
>       ============
> 
>                         i)request header           ii)request header
>            +~~~~>~~~~>~~~~>~~~+     +~~~~~>~~~~~>~~~~>~~~~~+
>            |                  |     |                      |
>           /|\                \|/   / \                    \|/
>       WebVisitor             Web Server               DWSCGI Server
>         (user)                (nginx)                   (php-dws)
>        /|\  \ /                                         /|\   \ /
>         |    |                                           |     |
>         |    +~~~~~~~~>~~~~~~~~~~~~>~~~~~~~~~~~~>~~~~~~~~+     |
>         |     iii) request body                                |
>         |                                                      |
>         +~~~~~~~~~~~~~<~~~~~~~~~~~<~~~~~~~~~~~~~<~~~~~~~~~~~~~~+   
>         iv)response header+body
> 
> I think that php-dws will save much more IO operator and become more efficient.
> In addition, we can send partial data to browser during script running, i.e:
> http://root.twomice.net/dws-test/sleep.phpd
> 
> Welcome to give me some suggestions or comments! 

What I never liked in unbufferd uploads, when people want to show
an upload progress bar, is that a large backend process is tied to
a client and the client may upload minutes. Now suppose that the backend
process size is 10M and there are 1000 uploading clients: you need 10G.


-- 
Igor Sysoev
http://sysoev.ru/en/